Dow Jones Industrial Average index appreciated sharply on Tuesday as data indicated the American housing market is likely to stabilize. Lower than predicted US consumer confidence did not manage to offset gains for the index. Blue Chip index surged 1.01% or 125.86 points and closed at 12,580.69 with 28 of 30 stocks posting gains. Bank of America rallied 4% as worries over Greek eased. Growth dependent Alcoa and Caterpillar jumped 3% and 2.9% respectively.